Oven door for domestic range



March 22, 1966 n. s. HIRSCH 3,241,547

OVEN DOOR FOR DOMESTIC RANGE Filed April 28, 1964 FIG. 1

2 Sheets-Sheet 1 INVENTOR. DAVID S. HIRSCH ATTORNEY March 22, 1966 D. s. HIRSCH 3,241,547

OVEN DOOR FOR DOMESTIC RANGE Filed April 28, 1964 2 Sheets-Sheet 2 FIG. 4 FIG. 3

INVENTOR. DAVID S. HIRSCH ATTORNEY United States Patent 3,241,547 OVEN DOOR FOR DOMESTIC RANGE David S. Hirsch, Brooklyn, N.Y. (57-18 Flushing Ave., Maspeth 78, N.Y.) Filed Apr. 28, 1964, Set. No. 363,221 2 Claims. (Cl. 126-200) The present invention relates to oven doors for domestic ranges and particularly to the type of oven door having an opening or window therein whereby the progress of baking or roasting may be observed without opening the oven door.

In recent years so-called wall or eye-level ovens have become popular which are usually arranged with the door thereof hinged at the bottom to permit access to the oven. With the doors arranged in this manner and the ovens at or near eye-level height the cleaning of the ovens is rather difiicult as the door when open is in the way.

In view of the above it is one of the objects of the present inventionto provide an oven door having awindow that is extremely easy and convenient to remove and replace thus enabling the oven to be easily cleaned through the window space with the oven door in a closed position.

Another object of the invention in connection with the above is to provide an oven door window unit adapted to maintain a reasonably tight seal between it and the door when installed therein.

A further object of the invention is to provide an oven door window unit having a plurality of spaced apart glass panels which may be conveniently replaced should they become broken or otherwise damaged.

A still further object of the present invention is to provide an oven door and window unit having a minimum number of parts that are easily and cheaply manufactured and assembled.

While the above and further objects and features of the present invention are particularly applicable to eye-level or wall type of ovens and the invention is described in conjunction with the same it will be apparent in the following detailed description of the preferred embodiment thereof wherein reference is made to the accompanying drawings that many of the advantages of the invention are applicable to other types of ovens.

In the drawings:

FIG. 1 is a perspective view of a wall-type oven embodying the present invention;

FIG. 2 is a perspective view of a part of an oven door showing the window receiving collar and the window unit adapted for insertion therein;

FIG. 3 is an enlarged sectional view of the window unit locking means taken substantially on line 3-3 of FIG. 1;

FIG. 4 is a side view of the window unit locking means taken substantially on line 4-4 of FIG. 3;

FIG. 5 is a perspective view of the window unit locking handle; and

FIG. 6 is a perspective view of the window frame connector block included in the locking means.

Referring now to the drawings and particularly FIG. 1 where there is shown a wall oven having an oven door 11 embodying the present invention installed alongside of a range top 12. The oven has the usual controls 15 along the top thereof and door 11 has a conventional type handle 13. The door as is usual in this type of oven is suitably hinged along the bottom edge so as to open by pulling the door in an outward and downward direction. It will be appreciated that the door in an open or substantially horizontal position access to the interior of the oven for cleaning purposes for example and particularly the rear thereof is very difficult since the open door is in the way. This difficulty is eliminated with the oven door in a closed position and the oven window 14 removed enabling one to readily reach the rear of the oven. It is the ease whereby the window unit is removed and replaced and the novel construction whereby this is accomplished to which the present invention is directed.

The oven door 11, as best shown in FIGS. 2 and 3, is constructed in the conventional manner with an inner metal panel 16 spaced from the outer panel 17 with the space therebetween filled with suitable insulating material 18. At the center section of the door 11 is a window unit receiving opening 19 defined by a substantially rectangular shaped collar 21. The collar 21 may be constructed of a length of extruded material formed and bent into the desired shape with abutting ends as at 22. The collar has an outwardly extending flange 23 which abuts against the outer surface of the inner door panel 16 and is held in place by screws such as 24 threaded into inwardly extending flanges 26 on the panels 16 and 17. The collar thus keeps the panels in the desired spaced-apart relation thereat. The collar also has an inwardly extending flange 25 against which the window unit seats.

In the preferred embodiment of the invention the window unit 14 includes a pair of similar U-shaped frame members 27 joined at their ends by connectors 28. The connectors 28 are attached to the channel members 27 by screws 29. The frame members 27 joined at their ends by connectors 28. The connectors 28 are attached to the channel members 27 by screws 29. The frame members 27 have on their inner surfaces a pair of spaced-apart channels 31 adapted to receive glass panels 32. Each of the frame members 27 also have an outwardly extending flange 33 which abuts against the edge of the opening in the front door panel as shown in FIGS. 1 and 3 when the window unit is in place in the door.

The connector 28, the left hand one which is shown in FIG. 6 have vertical offset sections 34 adapted to seat in the outside channel of the frame member 27 and when attached to the frame members there is provided a suitable rigid frame for the glass panels 32. The connectors 28 also have on the inner faces thereof horizontal rounded bottom grooves 36 which terminate adjacent the center of the connector and join with a similar vertical groove 37 in the upper half of the outer face of the connector.

The groove 36 is adapted to receive the. straight section 38 of a locking key 39 the forward end of which is anchored in an associated handle 41. The rear end 42 of the locking key 39 is at right angles to the section 38 and is adapted on turning of the handle to move from a position in the groove 37 to a position where the end 42 extends outward from the face of the connector. As best shown in FIG. 2 the door collar 21 has an opening 43 in each of the vertical sides thereof adapted to receive the ends 42 of the locking keys to hold the window unit 14 in place in the oven door. The forward edges of the opening 43 are sloped as at 44 toward the inner side of the oven door so that with the window unit inserted in the opening 19, the turning of the handles 41 enables the ends 42 of the locking keys to engage the sloping edges 44 and pull the window unit snugly into place. A gasket 46 may be provided on the inner flange 25 of the door collar 21 to form a reasonably tight seal between it and the window unit.

With the above describe-d construction all that is necessary when it is desired to remove the window unit 14 from the open door is to grasp the two handles 41 and turn each approximately a quarter turn in opposite directions, the left handle in a clockwise direction and the right handle in a counterclockwise direction, and pull the door unit forward. The handles 41 also provide a convenient means for handling the door unit. With the relatively large window unit removed from the door all of the interior of the oven can be conveniently reached. To replace the window unit all that is required is to place it in the door and turn the handles in the proper direction which locks it securely in position.

In addition to the above advantages it will be appreciated that should it be necessary to replace either or both of the glass panels in the window unit, the removal of two of the screws 29 from each connector 23 permits the U-shaped frame members 27 to be easily separated and the glass panels easily inserted in the frame members.

It will be obvious to those skilled in the art that various modifications may be made in the construction and in the elements comprising the present invention and it is desired therefore that only such limitations be placed thereon as are imposed by the appended claims.

What is claimed is:

1. An oven door having a substantially centrally located opening therein, said opening being defined by a substantially rectangular shaped collar, said collar having adjacent the oven inside end thereof an inwardly extending window unit seating flange, a pair of locking key receiving recesses in said collar, said recesses having sloping surfaces at the front edges thereof, a window unit for said oven door, said window unit having a pair of locking keys with manually operable turning means therefor and a pair of channelized glass panel retaining elements releasably joined together at their ends by a connector with said connector also comprising the locking key housing, said keys comprising rotatable elements with radially extending recess engaging parts and means including the manual turning of said keys to engage the radially extending parts of said keys with the sloping surfaces of said recesses to draw 43 said window unit into seating relationship with said seating flange.

2. An oven door having a substantially centrally located opening therein, said opening being defined by a substantially rectangular shaped collar, said collar having adjacent the oven inside end thereof an inwardly extending window unit seating flange, a pair of locking key receiving recesses in said collar, said recesses having sloping surfaces at the front edges thereof, a window unit for said oven door, said window unit including a pair of opposed channel members adapted to retain a plurality of glass panels, a pair of connector blocks releasably attached to the ends of said channel members to join the same into a full window unit frame, locking key means in said blocks, handles on the face of said window unit for operating said locking keys whereby said keys engage said sloping recess surfaces in said collar to seat said window unit againt said collar seating flange.

References Cited by the Examiner UNITED STATES PATENTS 642,922 2/1900 Reid 2056.1 1,154,430 9/1915 Possons 126200 1,619,501 3/1927 Evans 20-56.l 2,130,297 9/1938 Edwards 20-565 2,320,069 5/1943 Cresswell et a1. 2056.1 X 2,489,962 11/1949 Hardwick 126-200 FOREIGN PATENTS 324,546 11/1930 Great Britain.

KENNETH W. SPRAGUE, Primary Examiner. 

1. AN OVEN DOOR HAVING A SUBSTANTIALLY CENTRALLY LOCATED OPENING THEREIN, SAID OPENING BEING DEFINED BY A SUBSTANTIALLY RECTANGULAR SHAPED COLLAR, SAID COLLAR HAVING ADJACENT THE OVEN INSIDE END THEREOF AN INWARDLY EXTENDING WINDOW UNIT SEATING FLANGE, A PAIR OF LOCKING KEY RECEIVING RECESSES IN SAID COLLOR, SAID RECESSES HAVING SLOPING SURFACES AT THE FRONT EDGES THEREOF, A WINDOW UNIT FOR SAID OVEN DOOR, SAID WINDOW UNIT HAVING A PAIR OF LOCKING KEYS WITH MANUALLY OPERABLE TURNING MEANS THEREFOR AND A PAIR OF CHANNELIZED GLASS PANEL RETAINING ELEMENTS RELEASABLY JOINED TOGETHER AT THEIR ENDS BY A CONNECTOR WITH SAID CONNECTOR ALSO COMPRISING THE LOCKING KEY HOUSING, SAID KEYS COMPRISING ROTATABLE ELEMENTS WITH RADIALLY EXTENDING RECESS ENGAGING PARTS AND MEANS INCLUDING THE MANUAL TURNING OF SAID KEYS TO ENGAGE THE RADIALLY ENTENDING PARTS OF SAID KEYS WITH THE SLOPING SURFACES OF SAID RECESSES TO DRAW SAID WINDOW UNIT INTO SEATING RELATIONSHIP WITH SAID SEATING FLANGE. 